15520020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{6991}}^1$

素因数の和:7040

約数の個数: 48

約数和(自身を含む): 44636928

約数和(自身を除く): 29116908

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 37, 60, 74, 111, 148, 185, 222, 370, 444, 555, 740, 1110, 2220, 6991, 13982, 20973, 27964, 34955, 41946, 69910, 83892, 104865, 139820, 209730, 258667, 419460, 517334, 776001, 1034668, 1293335, 1552002, 2586670, 3104004, 3880005, 5173340, 7760010, 15520020]

約数ペア:

[(1, 15520020), (2, 7760010), (3, 5173340), (4, 3880005), (5, 3104004), (6, 2586670), (10, 1552002), (12, 1293335), (15, 1034668), (20, 776001), (30, 517334), (37, 419460), (60, 258667), (74, 209730), (111, 139820), (148, 104865), (185, 83892), (222, 69910), (370, 41946), (444, 34955), (555, 27964), (740, 20973), (1110, 13982), (2220, 6991)]